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19.03.2020 •
Mathematics
The arrival time of an elevator in a 12-story dormitory is equally likely at any time range during the next 4.5 minutes. a. Calculate the expected arrival time. (Round your answer to 2 decimal place.) b. What is the probability that an elevator arrives in less than 1.1 minutes
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Ответ:
a) The expected arrival time is 2.25 minutes.
b) 25.88% probability that an elevator arrives in less than 1.1 minutes
Step-by-step explanation:
An uniform probability is a case of probability in which each outcome is equally as likely.
For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.
The probability that we find a value X lower than x is given by the following formula.
The expected value of the uniform distribution is given by:
The arrival time of an elevator in a 12-story dormitory is equally likely at any time range during the next 4.5 minutes.
This means that![a = 0, b = 4.5](/tpl/images/0553/5744/5a6c2.png)
a. Calculate the expected arrival time. (Round your answer to 2 decimal place.)
The expected arrival time is 2.25 minutes.
b. What is the probability that an elevator arrives in less than 1.1 minutes
25.88% probability that an elevator arrives in less than 1.1 minutes
Ответ:
a
Step-by-step explanation: